Biology, 30.01.2021 04:40 kobiemajak

Sam had a disease that weakened his heart so it could not pump properly. This heart problem caused him to have low energy because his cells could not get the nutrients they needed.
Based on this information, Sam's disease primarily affected the functions of which two
systems?

1. skeletal system and digestive system
2. muscular system and cardiovascular system
3. integumentary system and muscular system
4. excretory system and cardiovascular system
Plz answer quick

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